Home / 1,455,360,021.10-2,183,040,031.65-420,254,670.70

Finding the Fourth Proportional to 1,455,360,021.10, 2,183,040,031.65 and 420,254,670.70

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Solution

The fourth proportional to 1,455,360,021.10, 2,183,040,031.65 and 420,254,670.70 is: 630,382,006.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,455,360,021.10 : 2,183,040,031.65 = 420,254,670.70 : x
  2. Step 2: Convert to fraction form
    1,455,360,021.10/2,183,040,031.65 = 420,254,670.70/x
  3. Step 3: Cross multiply
    1,455,360,021.10x = 2,183,040,031.65 × 420,254,670.70
  4. Step 4: Simplify right side
    1,455,360,021.10x = 917,432,769,625,988,352
  5. Step 5: Solve for x
    x = 917,432,769,625,988,352/1,455,360,021.10
  6. Step 6: Final answer
    x = 630,382,006.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.